Home / 5,280-8,490

Finding the Third Proportional to 5,280 and 8,490

Calculator

Solution

The third proportional to 5,280 and 8,490 is: 13,651.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280 : 8,490 = 8,490 : x
  2. Step 2: Convert to fraction form
    5,280/8,490 = 8,490/x
  3. Step 3: Cross multiply
    5,280x = 8,490 × 8,490
  4. Step 4: Simplify right side
    5,280x = 72,080,100
  5. Step 5: Solve for x
    x = 72,080,100/5,280
  6. Step 6: Final answer
    x = 13,651.53

Related Problems

Find third proportional to 2,640 and 4,245
Half scale
Find third proportional to 10,560 and 16,980
Double scale
Find third proportional to 5,282 and 8,493
Similar ratio
Find third proportional to 7,920 and 12,735
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.